siyuan-note SiYuan up to 3.7.1 Export kernel/server/serve.go serveExport path traversal

Summaryinfo

A vulnerability was found in siyuan-note SiYuan up to 3.7.1. It has been declared as problematic. Affected by this issue is the function serveExport of the file kernel/server/serve.go of the component Export. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2026-65607. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in siyuan-note SiYuan up to 3.7.1. It has been declared as problematic. This vulnerability affects the function serveExport of the file kernel/server/serve.go of the component Export. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. CVE summarizes:

SiYuan before v3.7.2 contains a path traversal vulnerability in the /export/temp/ short-circuit branch of the serveExport handler (kernel/server/serve.go). Unlike the main export branch, this branch joins the raw, percent-decoded request path with util.TempDir and serves the file without the IsSubPath or IsSensitivePath checks added in the earlier export-disclosure hardening (GHSA-6865-qjcf-286f). An authenticated attacker can send percent-encoded traversal sequences (e.g. /export/temp/%2e%2e/.../etc/passwd, where %2e%2e is decoded to '..') to read arbitrary files outside TempDir, including /etc/passwd, SSH keys (~/.ssh/*), and SiYuan workspace *.db and *.log files, bypassing the sensitive-file protection.

The advisory is available at github.com. This vulnerability was named CVE-2026-65607 since 07/22/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 3.7.2 eliminates this vulnerability.

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Productinfo

Vendor

• siyuan-note

Name

• SiYuan

Version

• 3.7.0
• 3.7.1

Website

• Product: https://github.com/siyuan-note/siyuan/

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CPE 2.2info

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